The number of normals drawn to the parabola $y^2=4 x$ from the point $(1,0)$ is

The number of normals drawn to the parabola $y^2=4 x$ from the point $(1,0)$ is
  1. 0
  2. 1
  3. 2
  4. 3

Solution

Given curve is $y^2=4 x$. Also, point $(1,0)$ is the focus of the parabola. It is clear from the graph that only one normal is possible.

Asked in: AP EAMCET 2009

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